K&N Heavy-Duty Air Filter Cleaner 1 Gallon — Concentrated Degreaser for Oiled Cotton Diesel Filters

K&N Power Kleen Heavy Duty Air Filter Cleaner is a concentrated degreaser formulated to remove old oil, dirt, and buildup from oiled K&N cotton-media heavy-duty air filters so they can be safely rinsed and renewed.

If your heavy-duty diesel or industrial K&N air filter has accumulated grime, grease, or long-standing filter oil, Power Kleen is made to dissolve and lift that buildup without harming the cotton filtration media when used as directed. This one-gallon formula is the only cleaner K&N specifically approves for its oiled cotton filters; other solvents can degrade the media or void warranty. Power Kleen is fast-acting and designed to simplify the cleaning stage before re-oiling and reinstalling the filter.

How does Power Kleen remove old oil and filter grime?

Power Kleen uses concentrated degreasing agents that break down heavy oils and embedded dirt on oiled cotton filter layers. Once the solvent action loosens residues, contaminants can be rinsed away with water, returning the filter to a cleaner state ready for re-oiling.

• Formulated to dissolve old filter oil and road grime
• Works on multilayer cotton media without abrading fibers when used per instructions
• Rinses clean with ordinary water after dwell time

Will using Power Kleen keep my K&N filter warranty intact?

Yes — Power Kleen is the K&N-recommended cleaner for oiled heavy-duty cotton filters; using other cleaners can risk damage or void warranty. Always follow K&N cleaning and re-oiling procedures to maintain coverage and performance.

• Manufacturer-recommended cleaner for K&N oiled heavy-duty filters
• Avoid gasoline or unapproved solvents that can degrade filter media
• Follow K&N’s specified cleaning and drying steps to preserve warranty

Can Power Kleen be used on all K&N heavy-duty diesel air filters?

Power Kleen is intended for use on oiled heavy-duty diesel K&N cotton-media filters. It is not recommended for polished or anodized aluminum parts and should not be used on dry or non-oiled filter types that don’t require solvent cleaning.

• Safe for oiled K&N heavy-duty diesel cotton filters
• Not for use on polished/anodized aluminum components
• Not suitable for dry-type or non-oiled filter elements

How do I use Power Kleen to get the best results?

Apply Power Kleen according to the steps on the product label: spray or soak to penetrate oil and grime, allow appropriate dwell time, then rinse thoroughly with low-pressure water until runoff is clear. After drying completely, reapply the correct K&N oil and inspect the filter before reinstalling.

• Spray or soak the filter, let the cleaner penetrate
• Rinse thoroughly until water runs clear, then air dry fully
• Re-oil with the correct K&N filter oil before reinstalling

Who is this product for? Power Kleen in the one-gallon size is aimed at fleet managers, heavy equipment operators, commercial diesel owners, and enthusiasts who maintain multiple K&N oiled heavy-duty filters or prefer a larger supply for frequent servicing. It’s ideal when you need a professional-strength cleaner that matches K&N’s recommendations and simplifies repeated cleanings while protecting the cotton media when used as directed.